richards



(No Model.) 3 Sheets-Sheet 1 J. E. RICHARDS.

WATCHMANS ELECTRIC TIME DETECTOR.

Patented J an. 2

MM ATTORNEY S o 8 0 ooo WITNESSES N. PETERS, PhohrLflhusmpMr, wnmn lon,D. c.

(No Model.) 3 Sheets-Sheet 2. J. E. RICHARDS.

WATOHMAN'S ELEUTRIO TIME DETECTOR.

No. 270,125. Patented Jan. 2, 1883.

WITNES ES MAM/WW ATTORNEYS \D L rm hm. Wnsivingicm D. c.

(No Model.) 3 Sheets-Sheet 3. J. E. RICHARDS.

WATGHMANS ELECTRIC TIME DETECTOR. No. 270.125.

Patented Jan. 2, 1883.

INVENTOR WITNESS S LII UNITED STATES PATENT OFFICE.

WATCHMANS ELECTRIC TIME-DETECTOR.

SPECIFICATION forming part of Letters Patent No. 270,125, dated January2, 1883,

- Application filed October 11, 1882. (NomodeL) To all whom it mayconcern:

Be it known that I, JAMEs E. RICHARDS, of Cedar Keys, Florida, haveinvented a new and useful Improvement in Watchmens ElectricTime-Detectors, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and exact description.

in thedrawings, Figure 1 shows a front view of the clock with the lid ofthe case open. Fig. 2 shows the connections of the electric circuits.Fig. 3 is a front view of a station-box with the lid of the box open.Fig. 4 is a side view ofa station-box, one end of the box being takenaway. Fig. 5 is a side view of the wheel and lever by which theslot-closing plate is operated and locked} Fig. 6 shows in horizontalsection the method of constructing the case of the tnne movement when itis desired to use it as an ordinary clock or time-piece in addition toitsfunction as apart of the detector. Fig. 7- shows the position of theparts when the slot is closed.

Like letters and figures indicate like parts in all the drawings.

My invention relates to that class of electric detectors in whichelectricity and the spring of the clock-movement are the motors, and itis, among other things, an improvement in the construction of theapparatus by which the inventioii patented to me by United StatesLetters Patent dated the 30th day of May, 1882, and numbered 258,603,may be practiced, and by it, among otheradvantages, the expense of theapparatus is greatly reduced, accuracy of operation secured, and thebattery-power required greatly lessened.

In the drawings, a a a, &o., are the case for the clock-inovement, madeof wood or metal, aspreferred. It is provided with ahinged lid, a, whichis provided with a lock.

1) b, 850., is the clock-dial, having the hour and minute designationsupon it, all as usual.

0 c, 850., is a metallic ring placedaround the outer edge of theclock-dial, but insulated from the clock frame and works. In this ringis drilled a series of holes, n n, (to. There are one hundred andforty-fourotthem, equidistant from each other, and they extend entirelyaround the ring 0. Th us they are distantfroin each other, measuring intime, five minutes. A number of little pins, n, are provided, which areto be placed in these holes, for the purpose hereinafter described.Theyare not fastened in the holes, butmay betaken out and changed inposition at pleasure.

d is the usual minute-hand of the clock. 0 is the hour-hand, which ispreferably made curved, as shown. It isin metal contact with theclock-works through its arbor. For greater ease in ascertaining the timewhen this part of the apparatusis used as an ordinary time-piece,

I attach to this hand 0 a straight pointer, j, which points directly ina straight line from the center of the dial to the time designations onthe dial.

9 is a metallic contact-spring in metal contact with the hand 0, and inorder that it may slip past the pins in the holes it when the hands aremoved either backward or forward in setting the clock I bend the end ofit, as shown, backwardly toward the center of the clock.

h is a block of suitable insulating material, preferably rubber,fastened to the trame of the clock-work, and t'is another similar block,likewise fastened to the frame of the clock-work. These blocksrespectively are provided with metallic contact-springs h and t, whichare fastened to the blocks, and their free ends project toward eachother, and are so formed and located relative to the metal tongue l ofthe insulated wheel ordisk l, hereinafter to be described, that whentheapparatus is in operation metal contact will be made between thetongue l and the spring h a few seconds, more or less, as desired,before contact is made by Z with the spring t"; but both springs shouldpreferably not be in contact with the tongue I at the same time.

j is a wheel fastened to the arbor of the minute-hand. It of coursecompletes arevolution once every hour.

lis a disk or wheel of some suitable insulatingmaterial, preferablyrubber. Itis placed upon a little shaft in metal contact with theclock-work. A tongue-like piece of metal, I, is either let into thisrubber disk or placed upon it, which connects with the shaft of thewheel and, projecting radially, extends somewhat beyond the edge of thedisk. There is a little pinion placed on the shaft of the rubber disk 1,below the disk, which gears into the work and its frame.

minute-wheel j. The number of teeth on the minute-wheel j is twelvetimes as great as that on the little pinion. Therefore since theminute-wheel j revolves once each hour the little pinion and the rubberdisk l, carried by it, revolve twelve times each hour, or once everyfive minutes.

7; is a wheel attached to the arbor of the hour-hand, its sole functionbeing to drive the disk m. It makes a complete revolution once everytwelve hours.

at is a disk revolving on a shaft attached to the clock-frame. It isdriven by the wheel It, which gears into a wheel attached to the disk,and which has twice as many teeth as the wheel 7.1. Consequently it-i.0., the disk mmakes a complete revolution once every twenty-four hours.The disk at is insulated from the clock- One-half of the disk at is madeof non-conducting material or is .covered on its edge with anon-conducting material.

oand v are two contact-springs, side by side, fastened to a block ofrubber placed on the frame, thereby insulating them from it. The freeends of the springs rest on the edge of the disk wt, preferably on thesame transverse line across the edge of the disk.

0 is a circuit-breaker placed on the inside of the case of the clock,for the purposes hereinafter stated.

0 is an ordinary switch or cut-out. Its function will be hereinafterexplained.

12 pp are three binding-posts placed on the outside or inside of theclock-case, as desired.

q represents one of the station-boxes. It is arbitrarily placed where itappears on the drawings for the purpose of illustrating the circuits.There may be as many of them on the circuit as desired, depending solelyon the batterypower. a r in like manner arbitrarily represent thebattery. sin like manner represents a bell. There may be as many bellson the circuit as desired, being located in different parts of theproperty over which the watchman has charge.

Having thus described the construction and arrangement of the clock, 1now proceed to describe the station-boxes.

1 is a wooden or metallic case or box, which contains a drum supportinga dial on which the watchman records his rounds. It is provided with astrong cover or lid, 2, preterably hinged to the case and provided witha lock. 1n the upper side of the case a slot, 3, is cut through it tothe inside. It is placed directly over the drum 4, hereinafter to bedescribed, upon which the dial is fastened. The slot is sufficientlywide to enable the watchman to make his record upon the dial byintroducing a pencil or other suitable utensil through the st t, and itis about but not quite the length of the drum 4.. This drum is acylinder, preferably of metal, provided with heads at both ends, in thecenter ot which are suitable points, 5 5'. The point 5enters and issupported by end of the point 5.

the bracket 6, which is fastened to the case, and the point 5 enters thecenter of the end of the shaft 7. A spring, 8, which is fastened to thebracket 6, presses against the projecting The spring is preferablyindented opposite the end of the point 5, the better to keep the pointin place, and it constantly presses the cylinder at toward the right,where, by the point 5, it is kept in po sition in the end of the shaft7. The drum is so made that it can be readily removed from its supportsand taken out of the case for replacing a dial or for inspecting it. Toaid in its ready adjustment when returned to the case, I cut out thefront end of the bracket 6 by a V-shaped incision, as usual in suchcases, so that the sides of the incision shall serve as guides toconduct the point 5 to its proper seat in the bracket.

9, 10, and 11 are three wheels, all rigidly fastened to the shaft 7. Theshaft is supported by and revolves in the brackets 12 12, which arefastened to the case. The wheels 10 and 11 have each the same number ofteeth, and the wheel 9 has exactly half that number. This relationbetween these several wheels should be preserved; but it is immaterialhow many teeth they have, the only thing to deter mine that being thenumber of spaces desired on the dial for the reception of the watchmansrecord. The teeth on the wheel 9are flattened on their ends, (best seenin Figs.4 and 5,) and are additionally recessed at their base. Into thisrecess at the base of some one of these teeth a carrier-pin, 13, (seenin Fig. 3,) which is rigidly fastened to the head of the drum, is madeto enter when the drum is placed in its position. Thus this pin 13drives the drum in unison with the wheel 9.

14 is the magnet; 15, the armature, which is pivoted to a bracket, 10.17 is a lever rigidly attached to thearmature. It projects upward fromit, and upon its upper end is pivoted a pawl, 18. This pawl is what maybe called a stop or locking pawl-that is to say, it has two teeth, onein front of and the other behind its pivotal point, whereby, both teethengaging in the teeth of the ratchetwheel 11 at each movement of thelever 17, the

back tooth on the pawl, by impingement on the teeth ofthc ratchet-wheel,prevents the momentum from carrying the wheel around more than onetooth. A spring, 19, keeps thepawl in place on the ratchet-wheel, and aspring, 20, pulls the lever 17 and the pawl back, when the currentceases and the armature is free; but when the lever and pawl are drawnback the front tooth of the pawl, nevertheless, is in constantengagement with some one of the teeth on the ratchet-wheel. A linger orborn, 29, projecting from the lever 17 over the pawl, prevents it fromaccidentally upsetting. The

lever 17, when retracted by the spring 20, brings up against asuitably-located set-screw, which regulates the degree of movement ofthe arma- To prevent the friction of the pawl turc.

against the ratchet-wheel in its back motion from drawing theratchet-wheel with it, 1 provide a suitably-located catch, 28, wellknown in such apparatus, which rests on the teeth of the ratchet-wheeland holds it in the position to which the pawl has shoved it. Alockingbar, 21, which is a rigid piece of metal fastened to the armature15, and so adjusted that when the armature is retracted it enters one ofthe teeth in the'wheel'lO, locks the shaft 7 and prevents the drum frombeing moved.

22 is a plate of metal supported on two arms, 23 and 24, one at eachend. The arm 23 extends from the plate downward, andxis pivoted to thebracket- 6. The arm 24 extends also downward, and is rigidly fastened tothe piece of metal 25, which is made substantially in the shapeshown inFigs. 5 and 7. It is pivoted near its center to the bracket 26. Thefunction of this device is to operate the slot-closing plate 22, actingthrough the arms 25 and 24, and its operation is somewhat analogous tothat of an escapement in an ordinary clock, with the exception that thisdevice is so constructed relative to the teeth on the wheel 9 that theplate 22 is firmly locked in its then position whenever the apparatus isat rest. This device operates as follows: Assuming the plate 22 to bethrown back away from the slot, one end of the piece 25, as will be seenby reference to Fig. 5, (in which figure the plate 22 is thrown back,)rests in the space between two of the teeth, and the other end restsupon the flattened end of another tooth. Thus it will be seen that theplate 22cannot be moved. Now, as the wheel 9 revolves in the directionof the arrow marked X, the side of the tooth marked 27 in Fig. 5 pressesupon the side of that portion of the piece 25 which is contiguous to it,and both these surfaces being at an angle to the line of force, thepiece marked 25 is caused to oscillate on its pivot, and when the motionof the wheel 9 has ceased it will be found that the piece 25 occupiesthe position shown in Fig. 7, the otherend of itrestingbetween twoteeth, and the end formerly between them resting upon the top of anothertooth, and the plate 22 will be moved in front of the slot; and theentire apparatus locked. A counter-balance, 30, is attached to the arm23 to facilitate easy movement of this part of the apparatus.

The operationis as follows, (referring to my said Letters Patentheretofore named for the general plan of the apparatus:) Time isreckoned tron] the contact-point of the springg on the end ofthehour-hand e. -The littlepins n it, before mentioned, are placed in suchofthe holes as are opposite the time designations on the clock-dial atwhich time the watchman is required to make his rounds for that night.These pins thus first placed in the ring 0, I will name the call-pins.Now, the time which the watchman will reasonably require to make hisrounds and write his record on the dials, as set forth inuny said priorpatent, having been predetermined, another pin is put into such one ofthe unoccupied holes in advance, respectively, of the holes occupied bythe callpins as are the requisite distance from them. measuring in time.This second set of pins I will name the slot-closing pins. From what hasbeen heretofore stated it will be seen that there is continuous metalliccontact(speaking now only of the circuit. on which the bells arelocated, and which I will name the bell-circuit) from one pole of thebattery through wire 15 to the bell, through the bell-and by wire it tothe binding-post p, and from p by wire t to the contact-spring It, whichis fastened to the insulating-block h, and since, as before stated, thelittle disk 1 brings the little metallic tongue Z into contact with thecontactspring h every five minutes, as'soon as the tongue 6 does makesuch contact the metal contact will be continued through the tongue andthe shaft on which the disk revolves to the clock-work, thence throughthe clock-work to the hour-hand c, and when the contact spring 1,carried around by the hand 6, comes in contact with any one of the pinsplaced in the holes a in the ring 0 the metal contact will be continuedthrough the pin 92 to the ring 0, which has heretofore been insulatedfrom the clock-work, and from the ring 0 the metal contact is continuousthrough wire 00 to the circuitbreaker 0, through it and by wire a to thecontact-springs, through the metallic portion of the disk in to thecontact-springc, through wire at to the binding-post 1), through wire00' to the other pole of the battery. Thus the circuit is completed, andof course all the bells on the circuit are operated. The contactspring 1on the hour-hand 0 remains in contact with the pin it during all thetime that the tongue 1' is in contact with the spring h and t", and, asstated, the little wheel I, carrying the metal tongue 1, leaves thecontact-spring h after being in contact with it a few seconds, more orless, thus breaking the bell-circuit, and immediately thereafteritconies in contact with the contact spring i, which is fastened to itsinsulating-block t When this takes place another and separate circuit iscoinpleted-to wit, that on which the station-boxes are placed, and whichI Will name the station-box circuit. This circuit is as follows: fromone pole of the battery through wire it, through the stationboxes,through wire ato binding post 1)", through wire a, throughcontact-spring t through tongue Z, through clock-work, through hour-handc and contact-springg, through a pin in the ring 0, through ring 0,through wire a, through circuit-lneaker 0, through wire .70, throughcontact-spring '0, through wheel in, through contact-spring 1;, throughwire 1) to binding-post p, and through wire 00" to the other pole of thebattery.

The apparatus in the station-boxes is operated by the current asfollows: The lever 17, fastened to the armature 15, brings the pawl 18forward, which, being in engagement with the teeth of the ratchet-wheel11, causes it to I ure represents the clock in horizontal sectionrevolve one teeth, the back tooth on the pawl meantime, as beforestated, preventing the momentum from carrying the ratchet" wheel overmore than one tooth. The wheel 9, being fast on the shaft 7, is carriedaround by the movement of the lever 17 half a tooth, which,

as betore stated, causes the piece of metal.

25 to rock on its pivot, whereby the plate 22 is tipped backward andaway from the slot in the top of the box, and is locked in thisposition, as before stated. The carrier-pin 13, during this revolutionof the wheel 9, causes the drum 4: to revolve with it an equal distance.Thus that part of the dial (which, as stated, is wrapped around thedrum) upon which the watchman has last made his record is carried awayfrom in front of the slot, and a ch ar space is presented for his nextrecord. As soon as the tongue 1 leaves the spring 2" the current isbroken, and the spring 20 draws the lever 17 backward, and the pawl 18engages with the tooth of the ratchet-wheel 11, one to the rear of thatwhich it has just left, and the locking-bar Zl, moving upward, engageswith a tooth of the wheel 10 and locks it, as stated. Thus the drum andall the apparatus are tirmlylocked until another movement of thearmature. The dials in the several station-boxes thus remain exposedduring the time required by the watchman to visit them all and note hisrecord. At the expiration of this time the contact-spring g on thehour-hand 0 has reached the slot-closing pin immediately succeeding thecall-pin which opened the slots. When this second contact between thespring g and the pin takes place the above-described operation of allthe devices is repeated by a repetition of the same movements-i. 0., thebells all ring, then the station-boxes all operate in the same manner asbefore-with this difference, however, that the wheel 9 on this secondimpulse acts positively upon the other end of the piece of metal 25 andcauses it to rock in the opposite direction. Thus at this secondmovement the plate 22 s moved in the opposite direction and the slot isclosed at all the station-boxes.

It should be noticed that the drum 4 receives two forward impulses foreach record made by the watchman-one by the action of the call-pin whenhe is summoned to make the record and the slots are uncovered, andanother by the action of the slot-closing pin hen the slots are closed.Consequently I make the diameter of the drum relative to theotherdevicesin the station-box such that these to omovements combinedshall rotate the drum the necessary distance to remove 'the part of thedial on which the record has been made away lrom in front of the slot.

Theforegoing describes my apparatus when the clock-work is used solelyfor the purposes of the detector; but it can be readily made to servethe purposes of an ordinary clock or time-piece as well by the additionof the following devices,illustrated in Fig. 6, which fig through thecenter of the arbors.

Like letters indicate the same devices as in the other figures.

a isthe case. b is the dial; c,the ring; (I, the minute-hand;c,thehour-hand; and yisa glass face set in the lid of the case.

It'the device were left asjust above described, it might be possible foran unscrupulous watchman to ascertain the combination on which the clockwas set by looking through the glass face y. To avoid this I provide adeep metallic shield, 2, which is fastened to the edge of the opening inthe lid, and it extends, when the lid is closed,inwardly toward thedial, and hides all the pins which are inserted in the ring 0. Thisshield z is of such depth as just to clear the hour-hand e, and theminutc-haml (Z is not long enough to touch it. \Vhen thus constructedthe time designations on the dial of the clock and the hands are exposedto view, as in an ordinarytime-piece; but the pins in the ring 0 are hidby the shield 2. When the combination on which the detector is set is tobe changed the lid will be unlocked and opened and the pins changed.

The function of the disk on is to automatically cut out and prevent theclosing of both of the circuits during twelve of the twentyfour hours,during which time no current can pass over either the hell orstation-box circuits. This is done in order that during the day-time thedetector part of the apparatus will not he in operation, the clockmeantime continuing to act as a time-piece.

Care should be taken, in the event of the clock running down, that whenresetting it the disk at is in the proper position to make metal contactwith the springs 'v and 1) during the twelve hours that the watchman isdesired to make his records; and to facilitate this I provide a pointerand figures to represent hours on the day half of the disk m, and alsoan arrow showing the direction in which the disk at turns. But it may bedesirable that the detector apparatus should run continuouslyday andnight; and in order that this may be done when desired I attach to theside of the clockcase an ordinary switch, 0,'\vhich being closed, thedisk at and the contact-springs a) and v are cut out, a shorter circuitbeing established through the switch by connecting through it the wires00 and 00.

It is also to be noticed that several distinct bell and station-boxcircuits can bealternately operated by the same battery and clock-workby combiningwith the make-and-break circuit disk Z other insulatedcontact-springs the same as those marked it and l. Of course suchadditional contact-springs must he provided with their own separatelines of wire, and the contact-spring g on the hand 0 must of courseremain in contact with the pins a while the wheel I is alternatelymaking connection with the springs k and 11, as well as such additionalones as may be added.

The function of the circuit-breaker 0 is to IIO station-boxes whensetting the clock. This is done by depressing the but-ton and breakingmetal contact on both circuits.

the plate -Having thus described my invention, I claim 1. Thecombination of a battery, a clockmovement continuously operating amake-andbreak-circuit hand, 6, the contact-spring g, the insulatedmetallic ring 0, the holes a, the pins u, the wheelj, thecontinuously-moving makeand-break-circuit disk I, the insulatedcontactsprings h and t the Wheel 70, thecut-outdisk m, thecontact-springs v and c, the break cir cuit 0, the switch 0, the bintling-postsp,p, and 1)", an electric hell or bells, a station box orboxes having locked lids and a slot through the side, and in which arethe following devices, to-wit: an electro-magnet operating an armature,the lever 17, the springs 19 and 20, the shaft 7, upon which are rigidlyfastened the toothed wheels 9, 10, and 11, the pawl 18, engaging withthe teeth on the ratchet-wheel 11, the locking-bar 21, engaging with theteeth on the wheel 10 when the armatureis retracted, the catch 28,engaging with the teeth of the ratchet-wheel, the pit'oted piece ofmetal 25, 22, supported by the arms 23 and 24, the revolving removableand dial-supporting drum 4, driven by the action of the armature 15, andsuitable'metallic connections, all combined and arranged substantiallyas and for the purposes set forth.

2. The combination of a battery, a clockinovement contin nouslyoperating a make-andbreak-circuit hand, 0, the contact-spring g, theinsulated metallic ring 0, provided with the holes n, the pins n, thewheel j, the continuously-moving make-and-break-circuit disk I, theinsulated contact-springs h and i, the wheel Ir, the cut-out disk m, thecontact-springs o and o, the break-circuit-o, the binding-posts 19,1),and 19', an electric bell or bells, and a station box or boxes havinglocked lids and a slotthrough their sides, and in which are thefollowing devices, to wit: an electro-magnet operating an armature, the'lever 17, the spring 20, the shaft 7, upon which are rigidly fastenedthe toothed wheels 9, 10, and 11, the pawl 18, engaging with the teethon the ratchet-wheel 11, the locking-bar 21, engaging with the teeth onthe wheel 10 when the armature is retracted, the catch 28, engaging withthe teeth of the ratchet-wheel 11, the pivoted piece of metal 25, theplate 22, supported by the arms 23 and 24, the revolving removable anddial-supporting drum 4, driven by the action of the armature 15, andsuitable metallic connections, combined and arranged substantially asand for the purposes set forth.

3. The combination of.a battery, a clockmovement continuously operatinga make-andbreak-cirouit hand, 0, the contact-spring g, the insulatedmetallic ring 0, provided with the holes a, the pins a, the wheel j, thecontinuously-moving make-andbreak-circuit disk I,

the insulated contact-springs h and i, the wheel k. the cut-out disk m,the contact-springs t and o, the binding-postsp,g9, and 1), an electricbell 'orbells, and a station box or boxes having locked lids and a slotthrough one of their sides, and in which are the following devices, towit: an elect-ro-magnet operating an armaturc, the lever 17, the spring20, the shaft 7, upon which are rigidly fastened the toothed wheels 9,10, aiid 11, the pawl 18, engaging with the teeth on the ratchet-wheel11., the locking-bar 21, engaging with the teeth on the wheel 10 whenthe armature is retracted, the catch 2S,engagingwith the teeth on thewheel 11, the pivoted piece of metal 25, the plate 22, supported by thearms 23 and 24, the revolving removable and dial-supporting drum 4,driven by the action of the armature 15, and suitable metallicconnections, substantially as and for the purposes set forth.

4. The combination of a battery, a clockmovement continuously operatingamake-andbreak-circuit hand, 6, the contact-springg, the insulatedmetallic ring 0, provided with the holes a, the pins a, the wheel j,thecontinuously-moving make-and-break-circuit disk l,v

the insulated contact-springs h and i, the binding-post 19,1), and 1)",an electric bell or bells, and a station box or boxes having aslotthrough one of their sides, and in which are the following devices, towit: an electromagnet operating an armature, the lever 17, the spring20, the shaft 7, upon which are rigidly fastened the toothed wheels 9 1011, the pawl 18, engaging with the teeth on the ratchet wheel 11, thelocking-bar 21, engaging with the teeth on the wheel 10 when thearmature is retracted, the catch 28, engaging with the teeth on thewheel 11, the pivoted piece of metal 25, the plate 22, supported by thearms 23 and 24, the revolving removable and dialsupporting drum 4,driven by the action of the armature 15, and suitable metallicconnections, substantially as and for the purposes set forth.

5. The combination of a' battery, a clockmovementcontinuously operatinga make-andbreaknircui-t hand, 0, the contact-spring g, the insulatedmetallic ring 0, provided with the holes a, the removable pins a, thewheelj, the

continuous moving make-and break circuit disk l, the insulatedcontact-springs h and t, the binding-posts pand pp, an electric belt orbells, and a station box or boxes havingaslot through one of theirsides, and in which are the following devices, to wit: an electromagnetoperating an armature, which armature, acting through a lever, rotates ashaft upon which is a dial-supporting cylinder placed opposite the-sloton the. side of the box, and which armature lever also operates a doorwhich automatically covers and uncovers the slot, substantially as andfor the purposes set forth.

6. The combination of a battery, a clockmovement continuously operatinga make-andbreak-circuit hand, 6, the insulated ring 0, provided with theholes 92, the pins n, against which pins the hand 0 makes metal contact,the continuously-moving make-and-break-circuit disk I, and the insulatedcontact-springs h and t", whereby the current from the battery isalternately diverted from one circuit into another circuit,substantially as and for the purposes set forth.

7. The combination of the electro-magnet 14, the armature 15, the lever17, the pawl 18, the spring 20, the shaft 7, the Whee1s9,10,and 11, thelocking-bar 21, the catch 28, the piece of metal 25, the plate 22, thearms 23 and 24, and the drum 4, whereby at each movement of the armaturethe drum is rotated and the plate 22 moved and upon the cessation ofeach movement of the armature both the drum and the plate 22 are lockedin their then position, substantially as and for the purposes set forth.

8. The combination of a battery, a cloole movement, ainakeand-break-circnit device geared to the clocK-movement, and soconstructed that the times when the circuit will be closed may be variedat will, and a second make-andbreak-circuit device, also geared to theclock-movement, and so constructed that the current from the batterywill be alternately diverted from one circuit to another circuit,substantially as and for the purposes set forth.

9. The combination of the clock-movement, inclosed in a locked case andprovided with the usual dial, the hand 0, carrying the corn tact-springg, the ring: 0, in which are the holes a, the removable pins n, placedin the holes a, and the shield a, substantially as and for the purposesset forth.

JAMES E. RICHARDS.

Witnesses:

JOHN J. GAULDWELL, PHILLIPS ABBOTT.

